User's Manual

Table Of Contents
Installation RF Path Elements CMA-331-AEN Page 140
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5.2.4 RAU/RAU5/RxU Cavity Filter Installation
The external cavity filters are required when the RF services modules supporting the corresponding CELL and LTE bands are
deployed alongside units supporting the public safety service.
The RAU/RAU5 supports connections to External CELL and LTE Filters
The RxU supports connections to an External LTE Filter.
In cases where an LTE External Filter is required and the RAU/RAU5 includes the RxU module both modules must be
connected to an external LTE filter.
Note the following:
The Cavity Filter mounting bracket supports wall/ceiling/acoustic ceiling installations. See Figure 5-97.
Figure 5-97.Cavity Filter Dimensions and Mounting Holes
Consider the length of the RF jumpers (3m) and the distance from the RAU when determining the installation location.
For acoustic ceiling installations use provided safety cable to secure the filter assembly to a permanent structure within the
ceiling (e.g. acoustic ceiling grid or concrete ceiling above).